There are 13 12-letter words that start with 'cong'.
| congealments | congelations | congeniality | 
| congenitally | conglobating | conglobation | 
| conglomerate | conglutinate | congratulate | 
| congregating | congregation | congregators | 
| congruencies | ||
Note: These 13 12-letter words that start with 'cong' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with congr, conge, congl, congo, conga, congi.
5-letter words start with 'cong' (3)